/*******************************************************************************
 * Copyright 2011, 2012 Chris Banes.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************/
package com.isunland.managesystem.base;

import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.ListView;
import com.handmark.pulltorefresh.library.PullToRefreshBase;

abstract class PullToRefreshBaseListFragment<T extends PullToRefreshBase<? extends AbsListView>>
    extends ListFragment {
  private T mPullToRefreshListView;

  @Override public final View onCreateView(LayoutInflater inflater, ViewGroup container,
      Bundle savedInstanceState) {
    View layout = super.onCreateView(inflater, container, savedInstanceState);
    @SuppressWarnings("ConstantConditions") ListView lv =
        (ListView) layout.findViewById(android.R.id.list);
    ViewGroup parent = (ViewGroup) lv.getParent();
    // Remove ListView and add PullToRefreshListView in its place
    int lvIndex = parent.indexOfChild(lv);
    parent.removeViewAt(lvIndex);
    if ((setCustomLayoutId() != 0) && (setCustomtListViewId() != 0)) {
      View view = inflater.inflate(setCustomLayoutId(), container, false);
      //noinspection unchecked
      mPullToRefreshListView = (T) view.findViewById(setCustomtListViewId());
      parent.addView(view, lvIndex, lv.getLayoutParams());
    } else {

      mPullToRefreshListView = onCreatePullToRefreshListView(inflater, savedInstanceState);
      parent.addView(mPullToRefreshListView, lvIndex, lv.getLayoutParams());
    }

    return layout;
  }

  protected int setCustomtListViewId() {
    return 0;
  }

  protected int setCustomLayoutId() {
    return 0;
  }

  /**
   * @return The {@link PullToRefreshBase} attached to this ListFragment.
   */
  public final T getPullToRefreshListView() {
    return mPullToRefreshListView;
  }

  /**
   * Returns the {@link PullToRefreshBase} which will replace the ListView
   * created from ListFragment. You should override this method if you wish to
   * customise the {@link PullToRefreshBase} from the default.
   *
   * @param inflater - LayoutInflater which can be used to inflate from XML.
   * @param savedInstanceState - Bundle passed through from
   * {@link ListFragment#onCreateView(LayoutInflater, ViewGroup, Bundle)
   * onCreateView(...)}
   * @return The {@link PullToRefreshBase} which will replace the ListView.
   */
  protected abstract T onCreatePullToRefreshListView(LayoutInflater inflater,
      Bundle savedInstanceState);
}